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Trail vs marathon: which race wears you out more?

NCT ID NCT06282341

Knowledge-focused Sponsor: Centre Hospitalier Universitaire de Saint Etienne Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early This study
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at how trail running and marathon running affect fatigue and recovery. Healthy runners completed a simulated marathon, a simulated trail run, or a real trail run. Researchers measured muscle strength before, right after, and one month after each race to see how the body recovers from these different types of running.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

46 people

The number who actually took part.

Started

Dec 2023

Finished

Dec 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 55 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Common for MARASIM, TRAILSIM and TRAILNAT: * Male or female * 18-55 years old * Endurance runners who run at least one running session of 20 km per week * Being able to run a marathon under 5 h or finishing a trail of 30 km during the last 3 years * Refrain from participating to a competition one month before the first visit and during the duration of the study * To have a medical certificate of no contraindication of running practise in competition * Registered with a social security scheme * Having given the written consent freely Specific for the 3 groups : * Specialist of trail running (TRAILSIM and TRAILNAT) * Specialist of road running (MARASIM) Exclusion Criteria: * Subjects who present cardiac or articular chronic pathologies (example: repeated sprain, patellar or joint problems) * Subjects who present chronic or central neurological pathologies * Subjects deprived of liberty or who should be legally deprived * Subjects who report to take forbidden products by the World Anti-Doping Agency * pregnant or breastfeeding woman

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Conditions

The condition(s) this trial relates to.

Fatigue

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Healthy

Contacts and locations

Locations

  • Unités de Myologie et de Médecine du Sport

    Saint-Etienne, France, 42055, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.